High-Security Combination Lock


S&G’s Model 2937 high-security combination lock meets federal specification FF-L-2937 for securing GSA-approved safes and containers.


Designed to meet federal specification FF-L-2937 for securing field safes, armory vault doors, weapons containers, and other GSA-approved containers, S&G’s High-Security Mechanical Combination Lock offers rugged construction, simple combination changing, built-in thermal protection, and a Spy-Proof® dial.

Our Model 2937 high-security combination lock is easy to install or retrofit onto existing containers. The lock matches the footprint and mounting dimensions of most mechanical and electronic safe locks.

Product Features

National Stock Number

DLA 5340-01-566-7405


Three all-metal wheels

1 million theoretical combinations

Dial spindle with carbide barrier pins and shear line to control point of separation

Stainless steel bolt resists 600 lbs. of side and end bolt pressure

Built-in thermal protection

Unique torque adjuster to set and maintain wheel pack torque

Key-changeable wheel design

Drilled and tapped holes in the bolt

Left-right-left dialing with push to open

Internal relock trigger


One-year limited warranty from date of shipment


Related Products

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Compare Clear
Number of Codes
Dual Control
Time Delay (in minutes)
Centrally Controlled
EMP Resistant
Audit Capability
Number of Audit Events
Smartphone Compatible
Number of Wheels
False Gates
Wheel Case Material

Documents & Specs

Model 2937 Sell Sheet


Model 2937 Installation_Operating Instructions

Part Numbers

Type Material Description
Kit Lock, dial, ring, standard-length bolt, extra short, drilled and tapped lock bolt for Mosler retrofit applications.
Accessory Spy-Proof dial only
Accessory Dial ring and dust cover only
Accessory Dust cover only
Model 2937 Part Numbers (.xls)


UL(85xx 2937)